Spectral tuning of rhodopsin and metarhodopsin in vivo.
Neuron
; 11(1): 29-39, 1993 Jul.
Article
en En
| MEDLINE
| ID: mdl-8338666
ABSTRACT
Color vision is dependent upon the expression of spectrally distinct forms of rhodopsin in different photoreceptor cells. To identify the structural features of rhodopsin that regulate spectral sensitivity and absorption in vivo, we have constructed a series of chimeric Drosophila rhodopsin molecules, derived from a blue- and a violet-sensitive rhodopsin, and used P element-mediated germline transformation to generate transgenic flies that express the modified pigments in the R1-R6 photoreceptor cells of the compound eye. Our analysis of these animals indicates that multiple regions of the opsin protein are involved in regulating rhodopsin spectral sensitivity and that the native and photoactivated forms of rhodopsin can be tuned independently of each other. These results demonstrate the feasibility of designing receptor molecules with specifically modified activated states.
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Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Rodopsina
/
Percepción de Color
Límite:
Animals
Idioma:
En
Revista:
Neuron
Asunto de la revista:
NEUROLOGIA
Año:
1993
Tipo del documento:
Article